Instantiate returns as null, why?

I have a script shown below that instantiates a Prefab called "Arrow" in my project, but I keep getting the error "The object you want to instantiate is null." I referenced the Prefab, and typed it as GameObject. What am I missing?



GameObject arrow;
void Start()
{
arrow = Resources.Load("Arrow") as GameObject;
}

// Update is called once per frame
void Update()
{
if(Input.GetMouseButtonDown(0))
{
GameObject Arrow = Instantiate(arrow) as GameObject;
arrow.transform.position = transform.position + Camera.main.transform.forward * 2;
Rigidbody arr = arrow.GetComponent<Rigidbody>();
arr.velocity = Camera.main.transform.forward * 40;
}
}
}

 

Please use code tags.

Your title says Instantiate is returning null, but the error message you quote seems to say that arrow (the object you are trying to copy) is null. Probably something went wrong at the Resources.Load step.

Also, the fact that you have separate variables called "arrow" and "Arrow" is probably a bad idea from a code readability standpoint.

 

Unrelated to your error, I'm sure you're making a mistake instantiating the object as "Arrow" but only trying to change the velocity and position of the "arrow" prefab instead.